Oregon Drinking Water Regulations

Drinking Water RulesOregon's Drinking Water Quality Act and Administrative Rules for Public Water Systems serve to ensure safe drinking water for Oregonians.

Rule Implementation Guidance

Groundwater RuleThe Groundwater Rule (GWR) applies to all public water systems that use groundwater sources or purchase groundwater. The primary purpose of the rule is to protect public health from bacterial and viral pathogens in public groundwater systems.

Long Term 2 Enhanced Surface Water Treatment Rule (LT2)The
Long Term 2 Enhanced Surface Water Treatment Rule (LT2) rule applies to
all public water systems that use surface water or groundwater under
the direct influence of surface water (GWUDI). The purpose of the rule
is to ensure adequate treatment of surface water sources with higher
levels of Cryptosporidium and to address uncovered finished water reservoirs.

Reduction of Lead in Drinking Water ActThe Reduction of Lead in Drinking Water Act amends the Safe Drinking Water Act regarding the use and introduction into commerce of lead pipes, plumbing fittings or fixtures, solder and flux. The law is effective January 4, 2014. EPA has provided the following document to assist manufacturers, retailers, plumbers and consumers in understanding the changes to the law:

Revised Coliform Monitoring RequirementsThese regulations apply to all public water systems with the intent of
minimizing potential pathways for fecal contamination to enter
distribution systems and to better protect the public from waterborne
illness. The coliform monitoring revisions under this rule do not alter
the source water monitoring
required for groundwater systems. Changes to the revised rules are
summarized below with links to additional resources for reference.

Stage 2 Disinfection Byproducts RuleThe
Stage 2 Disinfection Byproducts Rule (DBPR) applies to all community
and non-transient non-community water systems that add a primary or
residual disinfectant other than ultraviolet light (UV), or deliver
water that has been treated with a primary or residual disinfectant
other than UV. Systems that purchase disinfected water are included in
this rule. The Stage 2 DBPR builds on the existing Stage 1 rule and provides increased health protection.